Method of turning bags.



PATBNTED NGV. 29, 1904.

J. IVERSON. METHOD 0F TURNING BAGS..

APPLICATION FILED SEPT. 21, 1903.

N0 MODEL.

S11-@anton Joachim Iverson ,29V

' @Hom/w13 fnauwere.

JOACHIM IvaasoN. or Bao. BAG oo., Missouai.

Patented N n amber 29, 1906.

.UNiTaD STATES V Pivraarrr Orifice.

INDIANAPOLIS, INDIANA', ASSIGNQR T() BEMIS 0F ST. LOUIS, RHSSURI, .A CORPRATION OF METHOD o'F 'ruruillric-i.V BAGS.

SPECIFICATION forming part of Letters Patent No. 775,976, dated N ovember 29, 1904.`

` Application filed September 21, 1903. `Serial No. 174,041.- (No model.l

To all whom t may concern: 1

Beit known that I, JOACHIM IvnasoN, asub jectA of the King of` Sweden and Norway, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Methods of Turning Bags, of which the following is a specication.

It has heretofore been proposed to turn bags pneumatically by means of an apparatus consisting of an-open-ended 'casing over wh ichthe mouth of` the bag was distended and a` suction device by means of which the air within the casingrrnight be rarefied, thus causing the external pressure .to act upon the walls of the bag to force the same. through the distended mouth and into the casing, thereby turning the bag. VIn the use of an apparatus of this kind` the turning presspre acts upon the bag-walls from all directions equally, and there is therefore a tendency to crumple the bag and hold the walls together asthey are being blown through the `distended bag-mouth.

My present invention relates to an improved process of turning bags pneumatically, which process consists in holding the mouth of the bag open and distended and subjecting the .outer side of one wall of said bag to the action of a blast of air of -conlined crosssection, which blast is'directed upon a single point of one bag-wall and in such direction thatthe blast will pass along a `line which leads toward and through the distended bag-mouth from the position of the closed end of the unturned bag.

This process may be carried ont 'either by the mechanism shown in Figure 1, which is a central vertical section of an apparatus largely automatic in its operation, or by means such as is shown in Fig. y2.

In-Fia. 2 of the drawings is shown a blasttube 5, which is led from any suitable means for producing a blast, (not shown,) such as a storage-tank of` compressed air, va fan,a positive pressure-blower, &c. This spout is pro vided with a suitable discharge end by means of whichthe blast is somewhat confined as to cross-section, and the operator, standing'as 'of the blastl'shall be therefrom through the distended mouth of the bag, whereby the blast will act somewhat like a stick, over the end of which the wall ofthe bag will be drawn as l ilt passes'through lthe distended mouth of the The machine shownin Fig. 1 consists ofan air chute or casing 10, at the mouth Vot' which are arranged suitable bag opening and supporting fingers 11,' over which the mouth of the bag is to be placed. At the rear or discharge end of the casing l0 is a roller 12, which is continuously rotated in the direction l indicated by the arrow by any suitable means. Arranged above roller 12 is a ceac-ting roller 13, which is `journaled on the upper `rends of sliding arms 14 which may be moved up and down by means ot' a cam 15, so that roller 13 may be moved from and toward. roller 12 for a purpose which will appear. The arms 14 carry a cam 16, adapted toengagean arm 17, connectedv by links 18 with shafts 19, each of which carries one of the mouth-opening arms 11. vOne ofthe shafts 19 is provided with an arm 20, connected by a link 2l with a hlast1 spout 22, hinged at 23. Spout 22 at itsr dis charge end is arranged to directa blast oi' air into the receiving end of casing 10, and at its rear end said support is provided with an elbow 24, into which is sleeved the lower end of a suitable supply blast-pipo 25, tho arrangement being such that the spout 22 may be swung upon'its pivot without disconnecting it from .tube 25. Mounted iu pipe 25 is a suitable valve 26, which is arranged to be au-l tomatically operated by a link 27 and an arm. 28, the arm 28 carrying a roller 29,5; which is engaged intermittently by a cam 3Q, carried byarms 14. The shaft which carries cam l5 also carries a cam31, which is adapted tooperate a suitable delivering-ily in a weil-.95 known manner.

sal

, In'eperation the normal position of thel parts is that in which roller 13 is down against roller 12. d Fingers 11 are thrown inward toward the medial line of the receiving end of'casingi10,

said receiving end, With theparts inthese positions the operator places the Amouth ofaj bag over fingers 11, and a rotation ofthe cam where it may deliver a blast of air onto .the bag and into the casing 10, and opens valve 26', so as to allow such blast of air Vto pass 15 through pipe 22, the severalmovements taking place in the order named. The blast of air coming from spout 22 strikes one side of the bag and simultaneously turns and delivers the same into casing- 10, whereupon roller 13 2O begins to move toward Vroller 12 and valve 26 is closed. The further movement of roller 13 downwarddwithdraws cam 16 from arm 17, so that fingers' 11 return to normal position, spout 22 is'thrown away from casing 10, and 2 5 the vbag'*isgrasped between the two rollers l2 and L3 at ig'r'nearthe closed end or bottom and bygtheiifcieiivered to the iy 32, whereupon the operationis repeated. Y

The particular automatic mechanism for withdrawing the tube 22 from operative position and for opening and closingthe valve for controlling the blast, while illustrated ,bereim ierms no part of m town invention, said mechanism being the invention described and claimed by me in a companion applieal and spout -22 is thrown upward away fromv tion, serial INo. .rzo,04o,' ri1ed september ai,

The guard 13?'L is locatedin front of the roller 13* and parallel therewith andl serves to guide the rear end of the turned bag to pass between 40 the rollers l2 and'13.l i

I claim as my inven'tion' 1. That method of turning bags pneumatic-v aliy, which consists in subjecting one wall of the bag to a 'blast of air which passes in a div45 ally which consists in opening and distending the mouth `of the bag to be 'turnedso that a single thickness of the bag-wall is presented d to the impact of the` air-blast, the mouth being turned in a direction away from the outletoil the air-blast, and subjecting the outer side of the wallet' the bag nearest to the air-blast outletto the impact oi' ablast of air.

in witness .whereof| I have hereunto set my hand and seal, at Indianapolis, Indie-nm` this 10th day of September, A. D. 1903.

.JoacHrM ivERsoN. (i. j Witnesses:

C. A. TRIM), ADAH' J. JoHNsTON. 

